Results 71 to 80 of about 8,056 (240)

The Unique Granite Gorge in Mountainous Adygeya, Russia: Evidence of Big and Complex Geosite Disproportions

Geosciences, 2019
Geological heritage sites (geosites) are subject to conservation and exploitation for science, education, and tourism. Some geosites are big and comprise diverse phenomena.
Anna V. Mikhailenko, Dmitry A. Ruban, Natalia N. Yashalova, Maksim B. Rebezov   +3 more
doaj   +1 more source

Reduced West Antarctic Ice Sheet Size During Prominent Quaternary Interglacials Constrained by Iceberg‐Rafted Debris Provenance in the Amundsen Sea

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract The stability of the West Antarctic Ice Sheet (WAIS) remains a major uncertainty in sea‐level projections, and geologic records provide important constraints on its past behavior. We present 40Ar/39Ar ages of biotite and hornblende grains from iceberg‐rafted debris (IRD) in two Amundsen Sea sediment cores (PC493 and PS58/254), located south ...
Patric Simões Pereira, Claus‐Dieter Hillenbrand, Sidney R. Hemming, James W. Marschalek, Rob Larter, James A. Smith, Gerhard Kuhn, Tina van de Flierdt   +7 more
wiley   +1 more source

Geochemical characteristics of two types of early Paleozoic granitoids from the Soer Rondane Mountains, East Antarctica

, 2001
P(論文)Early Paleozoic granitoids of the S0r Rondane Mountains, which occur as stocks, batholiths or sheets and intrude into late Proterozoic high- to intermediate-grade metamorphic rocks, represent prominent Pan-African to post Pan-African ...
Owada, Masaaki, Tainosho, Yoshiaki, Shiraishi, Kazuyuki, Kimura, Jun-ichi, Li, Zilong   +4 more
core   +1 more source

An approach to geochemical characterization of productive versus barren granitoids in terms of iron in Central Turkey [PDF]

, 2004
The granitoids associated with, and without skarn type mineralizations in central Anatolia are termed as productive and barren granitoids, respectively. The study of the relationships between plutonic rocks in the Central Anatolian Crystalline Complex in
Sarac, C, Gencalioglu-Kuscu, G, Saraç, Cem, Kuşçu, İlkay, Kuscu, I, Meinert, LD, Kuşçu, Gonca Gençalioğlu, Meinert, Lawrence D.   +7 more
core   +1 more source

Origin and tectonic setting of middle–late Triassic Lalingzaohuo granitoids in the western East Kunlun Orogen, northern Tibetan Plateau

, 2023
Triassic granitoids are widespread in the East Kunlun Orogen (EKO), with Middle Triassic granitoids being dominant and Late Triassic granitoids being subordinate.
Jin-Xi Zhou (17587504), Bin Li (39349), Jing Chen (4762)   +2 more
core   +1 more source

Pleistocene and Holocene Mobility of Detrital Platinum in Southern New Zealand: Review and Regional Synthesis

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.
Detrital platinum group minerals (PGM) are rare and distinctive in Pleistocene–Holocene sedimentary systems of the southern South Island, thereby enabling tracking of their long‐distance transport for ∼200 km. The first ∼100 km of transport involved Pleistocene glaciofluvial processes southwards down the Waiau River, where PGM (principally Pt–Fe and Ru–
Dave Craw, Marshall Palmer
wiley   +1 more source

The contorted New England Orogen (eastern Australia): New evidence from U-Pb geochronology of early Permian granitoids [PDF]

, 2012
A series of sharp bends (oroclines) are recognized in the Paleozoic to early Mesozoic New England Orogen of eastern Australia. The exact geometry and origin of these bends is obscured by voluminous magmatism and is still debated. Here we present zircon U-
Rosenbaum, Gideon, Daniela Rubatto, Li, P., Pengfei Li, Rosenbaum, G., Gideon Rosenbaum, Rubatto, Daniela, Li, Pengfei   +7 more
core   +1 more source

Spatial-temporal distribution and tectonic setting of Mesozoic W-mineralized granitoids in the Xing-Meng Orogenic Belt, NE China

, 2021
The Xing-Meng Orogenic Belt is characterized by intense and widespread Mesozoic granitic magmatism related to large-scale W mineralization. Three periods of W-mineralized granitic magmatism can be distinguished: Early Triassic, Early–Middle Jurassic, and
Qing-Dong Zeng (5483879), Feng-Chun Li (11355176), Zhe-Ming Zhang (11355173), Zhuang Zhang (1924831), Jin-Jian Wu (11355170), Rui-Liang Wang (11355167), Wei Xie (16543)   +6 more
core   +1 more source

Crustal Architecture of the Paleo‐Pacific Rift Margin of East Antarctica: Evidence From U‐Pb Ages and O‐Hf Isotope Compositions of Ross Orogen Granitoids

Geochemistry, Geophysics, Geosystems
Granitic batholiths of the ∼500 Ma Ross Orogen in Antarctica are voluminous in scale, reflecting prolific magmatism along the active early Paleozoic convergent margin of Gondwana.
John W. Goodge, C. Mark Fanning, Christopher M. Fisher, Jeffrey D. Vervoort   +3 more
doaj   +1 more source

Anomalous Sample Detection Tool and Its Application in Identifying Interbasin Groundwater Flow in the Yarlung Zangbo River Basin, Tibetan Plateau

Water Resources Research, Volume 62, Issue 6, June 2026.
Abstract Interbasin groundwater flow (IGF) is increasingly recognized as an important but difficult‐to‐diagnose component of regional groundwater flow systems. Recent studies highlight that major rifts within the Yarlung Zangbo River Basin (YZRB) may facilitate IGF, but the role of all six major rifts remains unclear.
Jianxin Chen, Xingxing Kuang, Linfeng Fan, Jipeng Shan, Xiaoyan Shi, Yuqing Feng, Chunmiao Zheng   +6 more
wiley   +1 more source